<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<!DOCTYPE html>
<html>
<head>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Title</title>
</head>
<body>
    <div>
        <svg width="440px" height="240px" xmlns="http://www.w3.org/2000/svg">
    <rect id="rectangle" x=10 y=20 width=30 height=40 style="stroke:gray;fill:#ff9;stroke-width:3" />
    <text id="output" x=10 y=80 style="font-size:9pt"></text>
    <!-- 
        SVG脚本控制
        获取元素：
        document.getElementById(idStr);
        document.getElementsByTagName(tagName);
        元素设置属性：
        element.getAttribute(attr);
        element.setAttribute(name,attr);
        element.removeAttribute(name);
        元素设置style：
        element.style.getPropertyValue(proName);
        element.style.setPropertyValue(proName,value,priority[null/important]);
        element.style.removeProperty(proName);
        一次性设置style属性：
        element.style.cssText,
        文本内容：
        element.textContent;
     -->
    <script type="application/ecmascript">
        //<![CDATA[
            var txt = document.getElementById('output');
            var r = document.getElementById('rectangle');
            var msg = r.getAttribute('x')+', '+r.getAttribute('y')+' '+
                    r.style.getPropertyValue('stroke')+' '+
                    r.style.getPropertyValue('fill');
            r.setAttribute('height','30');
            txt.textContent = msg;
        //]]>
    </script>
</svg>
    </div>
    <div>
        <svg width="440px" height="240px" xmlns="http://www.w3.org/2000/svg">
    <circle id='circle' cx=50 cy=50 r=20 style="fill:#ff9;stroke:black;stroke-width:1" />
    <script type="application/ecmascript">
        //<![CDATA[
            function grow(evt){
                var obj = evt.target;
                obj.setAttribute('r','30');
            }
            function shrink(evt){
                this.setAttribute('r','20');
            }
            function reStroke(evt){
                var w = evt.target.style.getPropertyValue('stroke-width');
                w = 4-parseFloat(w);
                evt.target.style.setProperty('stroke-width',w,null);
            }
            var c = document.getElementById('circle');
            c.addEventListener('mouseover',grow);
            c.addEventListener('mouseout',shrink);
            c.addEventListener('click',reStroke);
        //]]>
    </script>
</svg>
    </div>
    <div>
    <svg width="400px" height="250px" id='svg03' xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://wwww.w3.org/1999/xlink" onload="init(evt)">
    <defs>
    <style type="text/css">
    <![CDATA[
    svg {
        stroke:black;
        fill:white;
    }
    g.selected rect {
        fill: #ffc;
    }
    text {
        stroke: none;
        fill: black;
        text-anchor: middle;
    }
    line.slider {
        stroke: gray;
        stroke-width: 2;
    }
    ]]>
    </style>
    <!-- 这样的事件在chrome中竟然无法使用断点来调试； -->
    <script type="application/ecmascript">
        <![CDATA[
            // 选中的序号
            var scaleChoice = 1;
            // 选中放大的比例
            var scaleFactor = [1.25,1.5,1.75];
            // 颜色滑块选择的序号，-1表示没有选择；
            var slideChoice = -1;
            var rgb = [100,100,100];
            // 初始化事件
            function init(evt){
                var obj;
                for(var i=0;i<3;i++){
                    obj = document.getElementById('scale'+i);
                    obj.addEventListener('click',clickButton,false);
                    obj = document.getElementById('sliderGroup'+i);
                    obj.addEventListener('mousedown',startColorDrag,false);
                    obj.addEventListener('mousemove',doColorDrag,false);
                    obj.addEventListener('mouseup',endColorDrag,false);
                }
                transformShirt();
                // 添加鼠标放开事件监控，这样在整个svg范围内鼠标放开都可以停止拖动；
                document.getElementById('eventCatcher').addEventListener('mouseup',endColorDrag,false);
            }
            // 开始颜色拖动
            function startColorDrag(evt){
                var sliderId = evt.target.parentNode.getAttribute('id');
                endColorDrag(evt);
                slideChoice = parseInt(sliderId[sliderId.length-1]);
            }
            // 结束颜色拖动
            function endColorDrag(evt){
                slideChoice = -1;
            }
            // 进行颜色拖动
            function doColorDrag(evt){
                var sliderId = evt.target.parentNode.getAttribute('id');
                chosen = parseInt(sliderId[sliderId.length -1 ]);
                if(slideChoice >=0 && slideChoice == chosen){
                    var obj = evt.target;
                    // 此处坐标的选择会有问题；当窗口不是最大化的时候，不能进行拖动了；
                    // 需要减去的是svg对象离浏览器顶端的距离；需要进行计算；
                    var s03 = document.getElementById('svg03');
                    console.log(s03.offsetTop);//这个始终是494
                    console.log(evt.clientY);// 这个开始是390多；
                    var pos = evt.clientY - 397;
                    console.log(pos);
                    if(pos <0){
                        pos = 0;
                    }
                    if(pos > 100){
                        pos = 100;
                    }
                    obj = document.getElementById('slide'+slideChoice);
                    obj.setAttribute('y1',pos);
                    obj.setAttribute('y2',pos);
                    rgb[slideChoice] = 100 -pos;
                    var colorStr = 'rgb('+rgb[0]+'%,'+rgb[1]+'%,'+rgb[2]+'%)';
                    console.log(colorStr);
                    obj = document.getElementById('shirt');
                    obj.style.setProperty('fill',colorStr,null);
                }
            }
            // 衣服型号按钮点击事件
            function clickButton(evt){
                var choice = evt.target.parentNode;
                var name = choice.getAttribute('id');
                var old = document.getElementById('scale'+scaleChoice);
                old.removeAttribute('class');
                choice.setAttribute('class','selected');
                scaleChoice = parseInt(name[name.length-1]);
                transformShirt();
            }
            // 衣服变换事件
            function transformShirt(){
                var factor = scaleFactor[scaleChoice];
                var obj = document.getElementById('shirt');
                obj.setAttribute('transform','translate(150,150) scale('+factor+')');
                obj.setAttribute('stroke-width',1/factor);
            }
        ]]>
    </script>
    <path id="shirt-outline" d="M-6-30-32-19-25.5-13-22-14-22,30,23,30,23-14,26.5-13,33-19,7-30A6.5,6,0,0,1-6-30" />
    </defs>
    <rect id="eventCatcher" x=0 y=0 width=400 height=300 style="fill:none" pointer-events="visible"/>
    <g id="sliderGroup0" transform="translate(230,10)">
        <rect x=-10 y=-5 width=40 height=110 />
        <rect x=5 y=0 width=10 height=100 style='fill:red' />
        <line id="slide0" class="slider" x1=0 y1=0 x2=20 y2=0 />
    </g>
    <g id="sliderGroup1" transform="translate(280,10)">
        <rect x=-10 y=-5 width=40 height=110 />
        <rect x=5 y=0 width=10 height=100 style='fill:green' />
        <line id="slide1" class="slider" x1=0 y1=0 x2=20 y2=0 />
    </g>
    <g id="sliderGroup2" transform="translate(330,10)">
        <rect x=-10 y=-5 width=40 height=110 />
        <rect x=5 y=0 width=10 height=100 style='fill:blue' />
        <line id="slide2" class="slider" x1=0 y1=0 x2=20 y2=0 />
    </g>
    <g id="shirt">
        <use xlink:href="#shirt-outline" x=0 y=0 />
    </g>
    <g id="scale0">
        <rect x=100 y=10 width=30 height=30 />
        <text x=115 y=30>S</text>
    </g>
    <g id="scale1" class='selected'>
        <rect x=140 y=10 width=30 height=30 />
        <text x=155 y=30>M</text>
    </g>
    <g id="scale2">
        <rect x=180 y=10 width=30 height=30 />
        <text x=195 y=30>L</text>
    </g>
    </svg>
    </div>
</body>
</html>